package com.apobates.forum.member.impl.dao;

import com.apobates.forum.member.dao.RegisteInviteCodeDao;
import com.apobates.forum.member.entity.RegisteInviteCode;
import com.apobates.forum.utils.DateTimeUtils;
import com.apobates.forum.utils.persistence.Page;
import com.apobates.forum.utils.persistence.Pageable;
import java.time.LocalDateTime;
import java.util.Optional;
import java.util.stream.Stream;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.TypedQuery;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

/**
 *
 * @author xiaofanku
 * @since 20200515
 */
@Repository
public class RegisteInviteCodeDaoImpl implements RegisteInviteCodeDao{
    @PersistenceContext
    private EntityManager entityManager;
    private final static Logger logger = LoggerFactory.getLogger(RegisteInviteCodeDaoImpl.class);
    
    @Override
    public Optional<RegisteInviteCode> findOne(String code) {
        try {
            RegisteInviteCode ric = entityManager.createQuery("SELECT ric FROM RegisteInviteCode ric WHERE ric.unicode = ?1 AND ric.status = ?2 AND ric.active = ?3", RegisteInviteCode.class)
                    .setParameter(1, code)
                    .setParameter(2, true)
                    .setParameter(3, false)
                    .getSingleResult();
            return Optional.ofNullable(ric);
        } catch (javax.persistence.NoResultException e) {
            return Optional.empty();
        }
    }
    @Transactional(propagation=Propagation.REQUIRED)
    @Override
    public Optional<Boolean> active(long id, long memberId, String memberNames) {
        int affect = entityManager.createQuery("UPDATE RegisteInviteCode ric SET ric.memberId = ?1, ric.memberNames = ?2, ric.activeDateTime = ?3, ric.active = ?4 WHERE ric.id = ?5 AND ric.active = ?6 AND ric.status = ?7")
                .setParameter(1, memberId)
                .setParameter(2, memberNames)
                .setParameter(3, LocalDateTime.now())
                .setParameter(4, true)
                .setParameter(5, id)
                .setParameter(6, false)
                .setParameter(7, true)
                .executeUpdate();
        return affect == 1 ? Optional.of(true) : Optional.empty(); //failure(new IllegalStateException("邀请码已被销毁了"));
    }
    
    @Override
    public Page<RegisteInviteCode> findAll(Pageable pageable) {
        final long total = count();
        if (total == 0) {
            return emptyResult();
        }
        TypedQuery<RegisteInviteCode> query = entityManager.createQuery("SELECT ric FROM RegisteInviteCode ric ORDER BY ric.buildDateTime DESC", RegisteInviteCode.class);
        query.setFirstResult(pageable.getOffset());
        query.setMaxResults(pageable.getPageSize());
        
        final Stream<RegisteInviteCode> result = query.getResultStream();
        return new Page<RegisteInviteCode>() {
            @Override
            public long getTotalElements() {
                return total;
            }
            
            @Override
            public Stream<RegisteInviteCode> getResult() {
                return result;
            }
        };
    }
    @Transactional(propagation=Propagation.REQUIRED)
    @Override
    public void save(RegisteInviteCode entity) {
        entityManager.persist(entity);
    }
    
    @Override
    public Optional<RegisteInviteCode> findOne(Long primaryKey) {
        return Optional.ofNullable(entityManager.find(RegisteInviteCode.class, primaryKey));
    }
    @Transactional(propagation = Propagation.REQUIRED)
    @Override
    public Optional<Boolean> edit(RegisteInviteCode updateEntity) {
        try {
            entityManager.merge(updateEntity);
            return Optional.of(true);
        } catch (Exception e) {
            return Optional.empty(); //.failure(e);
        }
    }
    
    @Override
    public Stream<RegisteInviteCode> findAll() {
        return Stream.empty();
    }
    
    @Override
    public long count() {
        try {
            return entityManager.createQuery("SELECT COUNT(ric) FROM RegisteInviteCode ric", Long.class).getSingleResult();
        } catch (Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("[count][RegisteInviteCodeDao]", e);
            }
        }
        return 0L;
    }
}